Spitzer, Herbert F. (Herbert Frederick), 1906- Spitzer, Herbert F. (Herbert Frederick), 1906-

Activities for the enrichment of arithmetic. - St. Louis : Webster Divion : McGraw-Hill, Webster Divion : McGraw-Hill, 1964.


Arithmetic -- Study and teaching.--Arithmetic -- Study and teaching.
Arithmetic -- Problems, exercises, etc.--Arithmetic -- Problems, exercises, etc.